Practical power cycles

Most real power cycles consist of a working fluid that flows through various devices that change the state of the fluid in a manner than mimics the Carnot cycle. Few power-producing systems are of the single-device type, such as the piston/cylinder used to demonstrate the Carnot cycle in Sect. 4.3. All practical power cycles contain four distinct steps, or rather two pairs of steps. Each pair of steps is conducted as an iso process. The cycles differ in the thermodynamic properties that are held constant in the pairs of steps. Table 4.1 lists the principle power cycles of practical significance, along with the Carnot cycle for comparison.

Table 4.1 Power Cycles

Cycle

Component Steps

Efficiency

Reference

Carnot

2 isentropic; 2 isothermal

1 - Tl/Th

#2, p. 101; #3, p. 37

Rankine(water)

2 isentropic; 2 isobaric

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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